I would not go much over 40 feet as the TH 11 is a big antenna. The 46 feet
of tower is the total you can go if my 1982 Rohn book is correct without an
antenna. You need to properly guy the tower per Rohn charts if you want to
put up the entire 75 feet. You also need to find your location on the wind
map and include that in your guying equation.
Dave K4JRB
----- Original Message -----
From: <bobbrus1@netscape.net>
To: <Towertalk@contesting.com>
Sent: Tuesday, April 03, 2007 8:21 PM
Subject: [TowerTalk] Rohn 45 Bracketed Tower
> I just purchased a 75 foot Rohn 45 and TH 11 that is currently guyed. I
would like input on how high I can go with the tower with a bracket at 23
feet. The charts for Rohn are a bit confusing to me, but I believe that I
would read it that I could have 46 feet of tower above the 23 foot bracket
for a total of 69 feet. Assuming an 80 MPH installation I should be able to
assume 24.7 Sq Ft of antenna area. Am I reading the chart correctly?
>
> Thanks
> Bob
> WV0C
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